Up until a couple years ago I was eating VERY low carb. I had been doing this for about a decade. Since resuming carbs a couple years ago, I've been unable to get my post prandial glucose levels to behave reasonably. Eating 25 grams of carb in a meal spikes my sugar up to around 180 and it stays that way for hours. In the last couple days I accidentally found that if I take 500 mg niacinamide when my sugar is high, it will fall within 10 minutes from 180 all the way down to between 80 and 100. A few hours later at my next meal it will spike back up to just shy of 200 again though. I'm not sure what to make of this or what to do with it. Does anyone have any thoughts?